Nothing, the SDKs come with their dependencies (managed by pip).
But, in order to access your webcam stream, you will need a dependency that is not
packaged into our SDK. We tend to use OpenCV a lot to do this (see other questions below).

Please use the latest Python 2.x version (with pip) 2.7.12.
Windows installer puts Python in C:\Python27 by default, if you choose an other directory,
please replace “c:Python27” by your chosen directory in the following instructions: